Nipple



FIG. 1 is a front, top, and side perspective view of a nipple embodying our new design.

FIG. 2 is a front view thereof.

FIG. 3 is a back view thereof.

FIG. 4 is a side view thereof, the opposite side being a mirror image.

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof. 

CLAIM The ornamental design for a nipple, as shown and described. 